PRODUCT OVERVIEWThe first noise-canceling headphones are back, with world-class quiet, lightweight materials, and proprietary technology for deep, clear sound and adjustable EQ so you can tune your music to your liking. Bose QuietComfort 45 headphones aren’t just an icon reborn – they’re the perfect balance of quiet, comfort, and sound. Plus, everything that made the first around-ear headphones an icon is still here. Just refined. Like an updated design with smooth cushions and a clean look. Plush synthetic leather, impact-resistant glass-filled nylon, and cast-metal hinges were all selected for their comfort as well as their durability. Add in minimal clamping force, and you’ll almost forget you’re wearing Bluetooth wireless noise-canceling headphones. Enhanced Acoustic Noise Cancelling™ technology produces the true quiet needed to hear every detail of your music in high fidelity. KEY FEATURESHigh-fidelity audio – The TriPort acoustic architecture offers depth and fullness. Volume-optimized Active EQ maintains balanced performance at any volume, so bass stays consistent when turned down and the music remains clear when turned up.Quiet and Aware Modes – Choose Quiet Mode for full noise canceling, or Aware Mode to bring the outside into the around-ear headphones and hear your environment and your music at the same time.Personalize your audio. Adjustable EQ allows you to set the bass, mid-range, and treble levels to your personal preferences or select one of several preset options.Up to 24 hours of battery life – Enjoy 24 hours of battery life from a single charge. A quick 15-minute charge offers 3 hours when you’re on the go, or plug in the included audio cable to listen for even longer in wired mode.Personalize your audio. Adjustable EQ allows you to set the bass, mid-range, and treble levels to your personal preferences or select one of several preset options.